Time and gravity , human aging and gravity. Is it a relationship between these terms? We will find out in this article.
More than a century ago, Einstein’s theory of general relativity revolutionized the human understanding of the universe. Since then, scientists have realized that the movement of time is not constant. Among the tragic consequences of general relativity is that time passes faster at the top of any staircase on Earth than at the bottom.
This confusing phenomenon is because the closer an object is to the Earth, the greater the effect of gravity. Since general relativity describes gravity as a warping of space and time, time moves slower at higher altitudes and farther from the Earth, where gravity has less influence.
The effect of gravity on human aging
So, if time is related to gravity, does that mean that people on top of mountains age faster than people at sea level? Does increased gravity make people age more slowly?
James Chin Van Cho, a physicist at the National Institute of Technology and Standards (NIST) in Boulder, Colorado, told LiveScience that time passes more slowly for all objects far from the gravitational field. This means that people living at high altitudes age slightly faster than at sea level. Chu said:
Gravity causes us to age more slowly. We age a little slower than someone not near a massive object. The entire universe around us expands more slowly under gravity than a person who is not near a massive body.
The differences are slight but measurable. If you sit on Mount Everest, 8,848 meters above sea level, for 30 years, you will be 0.91 milliseconds older than if you spend the same 30 years at sea level.
Read more : Is time travel possible?
Similarly, if twins who live at sea level are separated for 30 years, and one moves to Boulder County, Colorado, which is 1,800 meters above sea level. The other stays there, when 30 years later, the twin who lived at high altitude would be 0.17 milliseconds older than the twin who lived at sea level.
In a stunning experiment, NIST researchers used one of the world’s most accurate atomic clocks and showed that time moves faster even 0.008 inch (0.2 mm) above the ground.
Tobias Bothwell is a physicist at NIST and co-author of a paper published in 2022 in Nature’s journal describing the experiment. He said: “These are not just calculations. “We have seen changes in the clock’s movement over a distance as thick as a human hair.”
Time and gravity
The key to understanding why massive objects distort the passage of time is to know that spacetime is a four-dimensional environment consisting of three spatial dimensions (up or down and right or left and forward or back) and one temporal dimension (past or future) is formed. In the relativistic model, gravity is said to exist when any object with mass bends its environment and space and time simultaneously.
Andrew Norton, professor of astrophysics at the Open University in England, told LiveScience in an email.
Anything that has mass affects spacetime. In the vicinity of an object that has mass, spacetime is distorted, leading to the curvature of space and the expansion of time. This effect is real and measurable, But it is insignificant in everyday situations.
In non-everyday situations, the described phenomenon, called gravitational time dilation, can confuse. According to Norton, the GPS satellites orbiting the Earth at an altitude of 20,186 km must be adjusted because during 24 hours, their clocks move 7.45 microseconds faster than those on Earth. Chu says:
The most important effect of gravity on the passage of time is probably GPS accuracy. Since GPS satellites travel at high speeds and higher altitudes, and farther from Earth, the relativistic effects of speed and gravity must be accounted for to accurately infer our position on Earth.
From an individual perspective, it is clear that gravity causes us to age later. However, this phenomenon lasts only a few milliseconds, and living at sea level is not a good anti-aging strategy. Don’t forget that time is precious and fleeting, Especially when we are far from objects with mass.
Via : Livescience
Recording the first X-ray image of an atom with a “quantum needle”
Recording the first X-ray image of an atom with a “quantum needle”. For the first time, Ohio University scientists have managed to record the first X-ray image of an atom using a quantum needle.
Water play in the space station is not just fun and games
Water play in the space station is not just fun and games
In this artice we’re going to read about why water play in the space station is not just fun and games .In an interview with Nature magazine, he said about his job: I am an astronaut of the European Space Agency. Last year, I spent five months—from late April to mid-October—on the International Space Station (ISS), with the last month as station commander. Before returning to the field, my team and I took some time to play with the water. Here, inside the International Space Station, I show how water behaves in zero gravity.
There are a few tricks you can use to make sure the water stays where you want it. Surface tension holds the water bubble together, and you can move it by gently pulling on it using a straw or blowing on it. If the bubble is small enough, you can drink it. We recycle all the water inside the spacecraft.
Weightlessness is not only exciting but also an opportunity to study fundamental physics. There is a lot of research on fluid dynamics in space stations. A study that I personally participated in deals with the loosening behavior of different types of liquids and mixtures of liquids and gases in containers. The results are very important for the design of fuel tanks, especially for space applications.
This photo was taken in the Japanese test module. It’s the largest single module on the ISS, so we often use it to talk to the media or school students. When we communicate with them, we use things like the balls behind my head that are models of the planets and the moon. The round thing behind me is the module airlock. We use it to deploy satellites as well as hardware like scanners for science experiments.
This was the second time I went to the International Space Station. I quickly adapt to the space and enjoy the feeling of weightlessness very much. It’s much harder for me to come back down to earth.
I don’t know when I will go there again. We’ll see how the US-led Artemis program to return humans to the moon evolves over the next decade. Maybe I will get another chance.
Cristoferti was a member of the Crew-4 mission carried out by SpaceX. At that time, he arrived at the space station with the “Dragon” capsule to begin his 6-month stay on April 27. It should be mentioned that the “Cro-4” mission was the second space flight of “Cristoforti”. He previously stayed on the space station from November 2014 to June 2015.
Why does time move forward?
Why does time move forward? No matter how ambiguous we are about the phenomenon of time, we agree on one thing, and that is that time always moves forward.
Why does time move forward?
Recently, a group in Australia has investigated the category of moving time forward and how it occurs. Before this, it was thought to be one of the fundamental principles of the natural world, but apparently there is a more important reason for this.
We all know that time only moves forward. No matter how many attempts have been made to change it, we know that broken glass will never repair itself and people will never be young again after aging. There are many hypotheses for the cause of this phenomenon, but for a long time, it has been thought that this one-way movement is one of the fundamental and integral parts of nature.
But based on new research conducted by Joan Vaccaro of Griffith University in Australia, it is said that this is not the main issue, and there is probably a deeper and more solid reason for time to move forward. In other words, it can be said that there must be a very careful difference between two different time directions. These two directions are actually the past and the future, and there is a factor that always leads us to the future and the opposite never happens.
Let’s back up for a second. It seems that this category is one of the most exciting and unimaginable aspects of physics. The mystery of time seems ambiguous because the forward movement of time is important in human life. But if we look at them individually at the atomic and molecular scale, then the movement of time forward or backward will not make much of a difference for these particles, and the particles will continue to behave regardless of the movement of time forward or backward.
We should keep in mind that our main discussion here is not about space, because you shouldn’t expect that moving objects in space won’t change their location anyway. Therefore, scientists believed for a long time that there must be a basic reason for the expansion of the universe as time moves forward, and they did not imagine this for the category of space itself. This view is actually known as the asymmetry between space and time. The best example to express inconsistency is that the equations of the laws of motion and stability have inhomogeneous functions in time and space. Vaccaro says:
In the relationship between space and time, it is easier to understand and receive space; Because space is something that simply exists. But time is something that always pushes us forward.
His new plan states that it is possible that the two mentioned directions for time (forward and backward) are not the same at all. Vaccaro continues: Experiments conducted on subatomic particles in the last fifty years show that nature does not behave the same in dealing with these two directions of time. Among these, we can especially mention the subatomic particles called B and K mesons, which exhibit anomalous behaviors in terms of time direction.
K and B mesons are very small subatomic particles that cannot be examined without the help of some advanced tools. But the evidence of their different behavior according to the time direction effective on them shows that the reason for this difference, instead of being related to a fundamental part of nature’s behavior, may be due to the direction in which we are moving in time. We are walking. Vaccaro explains in this context: As we move forward in time, there will always be some backward bounce, like the effects of motional instability, and in fact, this backward motion is what I intend to measure using the B and K mesons.
To carry out this research, Ms. Vaccaro rewrote the equations of quantum mechanics, taking into account that the nature of time will not be the same in two directions, and the results showed that the calculations performed can accurately explain the mechanism of our world. Vaccaro said about this: When we included this complex behavior in the model of the universe, we realized that the universe moves from a fixed state in one moment to moment-to-moment and continuous changes. In other words, this difference in the two directions of time seems to be the reason for forcing the universe to move forward.
If this issue is proven, it will mean that we have to rethink and revise our understanding and acceptance of the category of time passage and the equations affected by it. But on the other hand, this achievement may lead to new insights and findings about the more strange aspects of time. Vaccaro said in the end: Understanding how time passes and evolves brings us to a completely new perspective on the natural foundations of the phenomenon of time itself. Also, in this way, we may be able to get a better understanding and reception of amazing and exciting ideas such as traveling to the past.
Vaccaro’s calculations have been published in the Journal of Physical and Mathematical Engineering Sciences.
Gas river has a star on the outskirts of the Milky Way
France and Italy collaborate to build a lunar habitat
Solar system; Formation, planets, wonders and everything you need to know
The International Space Station
Air pollution control in South Korean style
How to disable app notifications on Android
The best reverse image search apps with direct download links
What are the most important challenges for NASA?
The relationship between high blood insulin levels and pancreatic cancer
James Webb tells a new story about the birth of the Earth
Technology4 months ago
Who has checked our Whatsapp profile viewed my Whatsapp August 2023
Technology4 months ago
Second WhatsApp , how to install and download dual WhatsApp August 2023
Humans1 year ago
Cell Rover analyzes the inside of cells without destroying them
Technology5 months ago
How to use ChatGPT on Android and iOS
AI12 months ago
Uber replaces human drivers with robots
Space1 year ago
We Could Be Living on The Moon by 2030
Health12 months ago
PefusiX-Imaging is a tool for imaging blood flow
Technology1 year ago
How to know that our phone has been hacked